STM32F103 使用PB3，PB4休眠唤醒问题

John_Zhou · 发表于 2016-7-19 21:24:21

本帖最后由 John_Zhou 于 2016-7-19 21:28 编辑

大家好，问题如下
      我用STM32F103的PB3，PB4口作为外部中断唤醒MCU。现在是唤不醒，不知原因？
   PB3，PB4是JTAG口，初始化时候已经屏蔽掉JTAG功能了
   //===================按键初始化========================================
   RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_AFIO, ENABLE);          // 使能PB,复用时钟
   GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);                //禁用JTAG，使能SWD
   GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 | GPIO_Pin_4 ;    //
   GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_IPU;          //设置上拉输入
   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;    //
   GPIO_Init(GPIOB, &GPIO_InitStructure);                      //

   进STOP模式之前，设置为外部中断
   //==============外部中断初始化====================================
   GPIO_InitTypeDef GPIO_InitStructure;
   EXTI_InitTypeDef EXTI_InitStructure;
   NVIC_InitTypeDef NVIC_InitStructure;
//pb3
RCC_APB2PeriphClockCmd(GPIO_PortSourceGPIOB|RCC_APB2Periph_AFIO, ENABLE);//使能时钟
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);
GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOB,&GPIO_InitStructure);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource3); //

  EXTI_InitStructure.EXTI_Line = EXTI_Line3;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

  NVIC_InitStructure.NVIC_IRQChannel = EXTI3_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x04;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  //pb4
  RCC_APB2PeriphClockCmd(GPIO_PortSourceGPIOB|RCC_APB2Periph_AFIO, ENABLE);
  GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);//è¡Ï&#251

B3oíPB4,PA15μÄ¸′óÃ1|Äü
  GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_4;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
  GPIO_Init(GPIOB,&GPIO_InitStructure);
  GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource4); //

  EXTI_InitStructure.EXTI_Line = EXTI_Line4;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);

  NVIC_InitStructure.NVIC_IRQChannel = EXTI4_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x05;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

John_Zhou · 发表于 2016-7-19 21:25:12

怎么少了好多？？？

John_Zhou · 发表于 2016-7-19 21:27:01

GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource3); // EXTI_InitStructure.EXTI_Line = EXTI_Line3; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; EXTI_InitStructure.EXTI_LineCmd = ENABLE; EXTI_Init(&EXTI_InitStructure); NVIC_InitStructure.NVIC_IRQChannel = EXTI3_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02; NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x04; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure);

正点原子 · 发表于 2016-7-20 22:15:24

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STM32F103 使用PB3，PB4休眠唤醒问题

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